Improved bhidge-qate



J ULIUS WILCKE AND M. ELLENBOGEN, CHICAGO, ILLINOIS, ASSIGNORS` ITO MAXIMILIAN E/LLENBOGEN.

Letters .Patent No. 100,480, dated Mwrch 1, 1870.4

i IMPRoven :BRIDGE-GATE.

The chednle referred to in these Letters Paten't and making part or me same To all whom/t may concern Be itknown that we, JnLIUs WILCKE and M. EL- LENBOGEN, of Chicago, in the county of Gook, and State of Illinois, have invented a new and useful Improverneut in Bridge-Gates; and we do hereby declare the followingto be a full, clear, and exact description of the same, reference being had to the accompanyi ing drawings and the letters and figures marked thereon, which. forrn a part of this specification, and in which Figure :Irepresents a top or plan view of the bridge and bridge-gates;

hereinafter fully described, whereby sliding gates are opened and closed by the action of aA turn-bridge, so that thefbridge in opening closes the gates, and in vclosing opens the gates;

To enable those skilled in the art to understandl how i to .manufacture and use our invention, we will proceed to describethe same with particularity. i

Thev same letters of reference -refer tok thecorre- Spending parts'in the `different gures.

`In the annexed drawings.- i i A represents the turn-bridge, to each the toot-hed pieces-B B' `are attached.

C, C represent the roadway on the abutments of the bridge;.and A* I), the sliding-gates that are V,slid across the roadend of which `way as the bridge is opened and back, as shown in'iig. y

2, as the bridge disclosed.

E are gate-posts, s et permanently bythe side of the roadway, to which the pulleys F are attached that serve' to yguide the` gates.

The gates are supported by the rollers H that' run on attack extending across the roadway.

The nprights J ofthe gates extend below the-roadway, and there are attached toeach one of them two cords or chains, K and L.

The cord L passes around the pulley 0, and all the cords are attached to the drum P in such a manner4 that the cords 'K wind up on the drum als the cords unwind therefrom, andmce versa. 'i

There are two cog-wheels, R and R', on the shaft of .the drum P, and vthere is also another cog-wheel,

S, which engages with the cog-:wheel R.A

The cog-wheel S extends further forward than the cog-wheels It and R', and it is operated or driven by the toothed piece B', which isset a little further back 'on the bridge than the piece B, as shown.

If the bridge is closed, as indicated by the dotted i lines in iig, 1, and the gates open when theoperator turns the bridge to open it, if he turnsit in one direction the pieces 4B engage with the cog-wheels S,

. and thereby revolve the drums Rand wind the cords so as to close the gates; but if he turns the bridge in `theopposite direction to open'it, the pieces B engage with the cog-wheelR', andrevolve the drums in the vsame direction as before, and close' the gates. Also,

when the bridge is opened and the gates closed, it makes no difference which' way th e\ bridge is turned l to close it'.l If it is turned one' way,.the pieces B' re-, I

volve the cog-wheels S; and. it' itis turned the 'other way, thepieces B turn the cog-'wheels R', and on aconnt of thc wheelsS engaging with the cog-wheelR, the d rnnisP are 1 revolved vin the same direction in either instance, and open the gates.

The cog-wheels may bearranged as shown in figs. 4 and 5, or as shown in figs. 6 and 7 or instead of beingj cog-wheels, they may be operated by friction against the end of the bridge as it is opened and closed.

The cordsK and L may be attached to springs T that areattached t'o thegate-pieces J, or'the springs may be arranged'in connection with said coid's in any i other placefthe object being to obviate the objections to arigid attachment between the bridge and gates.v

Having thusfully described the construction and operation of our invention,

Whatwe claim, and desire to secure by Letters Patent, is

The drums P, ropes or rchains K and L, and gates D, when soconstructed and arranged that the bridge,

- when it is opened and closed, will alternately rotate the drums in opposite directions, and wind the' cords thereon, and open and close the gates, substantially JULIUs 'vi/'incisa M. nLLENBoonn.

asdescribed.

l Witnesses:

Lewis L. Continu, J. L. Coenen. 

